137 entries under tough topic. ×
| stiff(adjective, hard, strain, rough) | |
| stubborn(adjective, characteristic, quality, obstinate, stubbornness) | |
| hard(adjective, strain, rough, firm) | |
| unyielding(adjective, hard, strain, rough) | |
| intractable(adjective, control, order, difficulty) | |
| recalcitrant(adjective, control, order, difficult) | |
| rigid(adjective, hard, strain, firm) | |
| contumacious(adjective, firm, determined, negative) | |
| unmanageable(adjective, control, order, hard) | |
| headstrong(adjective, firm, determined, negative) | |
| contrary(adjective, difficult, cross, wild) | |
| rebellious(adjective, firm, negative, obstinate) | |
| perverse(adjective, mean, difficulty, firm) | |
| insubordinate(adjective, firm, negative, hostile) | |
| wayward(adjective, difficult, violent, wild) | |
| self-willed(adjective, firm, difficult, wild) | |
| inflexible(adjective, hard, rough, firm) | |
| mulish(adjective, firm, difficult, determined) | |
| obstreperous(adjective, control, order, resist) | |
| uncooperative(adjective, difficult, wild, awkward) |
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| APA | Smart Define. (2015). refractory thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, refractory thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>. |
| MLA | Smart Define. "refractory thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms> |